Results 31 to 40 of about 4,204 (206)

Study of Morphology of Sorption Substances

Разработка и регистрация лекарственных средств, 2019
Introduction. Substances with sorption properties can be used to create transport drug systems, in which the main mechanism of binding, transport and release of the drug molecule is sorption.
A. V. Bondarev, E. T. Zhilyakova, N. B. Demina, V. Y. Novikov   +3 more
doaj   +1 more source

Hydrothermal synthesis and characterization of dioctahedral smectites: A montmorillonites series [PDF]

, 2008
International audienceThe aim of this study is to synthesize and finely characterize montmorillonite samples, dioctahedral smectites without tetrahedral charges (structural formulae Nax(Al(2 − x)Mgx)Si4O10(OH)2), to allow their use as reference samples ...
Bény, Jean-Michel, Champallier, Rémi, Lantenois, Sébastien, Muller, Fabrice   +3 more
core   +3 more sources

Dioctahedral mixed K-Na-micas and paragonite in diagenetic to low-temperature metamorphic terrains: bulk rock chemical, thermodynamic and textural constraints [PDF]

, 2008
Metamorphic mineral assemblages in low-temperature metaclastic rocks often contain paragonite and/or its precursor metastable phase (mixed K-Na-white mica).
Alt J.C., Bucher K., Chamley H., Chatterjee N.D., Coggon R., Connolly J.A.D., Connolly J.A.D., Darken L.S., Degens E.T., Foster M.D., Frey M., Frey M., Frey M., Frey M., Frey M., Guidotti C.V., Guidotti C.V., Holland T.J.B., Holland T.J.B., Jiang W.-T., Kenneth J. T. Livi, Kisch H.J., Koroknai B., Korzhinskii D.S., Li G., Livi K.J.T., Livi K.J.T., Livi K.J.T., Loughnan F.C., Merriman R.J., Merriman R.J., Merriman R.J., Merriman R.J., Merriman R.J., Millot G., Powell R., Powell R., Price J.R., Proyer A., Péter Horváth, Péter Árkai, Siivola J., Thompson A.B., Thompson J.B., Thompson J.B., Thompson J.B., Weaver C.E., Winkler H.G.F., Zen E.-A., Árkai P., Árkai P., Árkai P., Árkai P., Árkai P., Árkai P., Árkai P., Árkai P., Árkai P.   +57 more
core   +1 more source

Hydrothermal behaviors of dioctahedral smectites.

Journal of the Mineralogical Society of Japan, 1990
Three montmorillonites from Tsukinuno, Odo, Mikawa and one beidellite from Sano saturated with various cations (Li, Na, Rb, Cs, Mg, Ca, Sr, Ba, Ni, Co) were treated under hydrothermal conditions. Smectites changed to mica, chlorite and some non-sheet silicates through interstratified mineral phases.
Toshihiko MATSUDA, Miyazu YOSHIDA, Yuzi HAMADA, Joyo OSSAKA   +3 more
openaire   +2 more sources

Selectivity of Na-Montmorillonite versus Concentration of Two Competitive Bivalent Cations (Cu2+, Pb2+): Quantitative XRD Investigation

Advances in Materials Science and Engineering, 2009
The goal of this paper is to examine, by quantitative XRD analysis, the effect of heavy metal cation concentrations (Pb2+, Cu2+) on the selectivity phenomenon in the case of dioctahedral smectite (i.e., Na-montmorillonite).
W. Oueslati, M. Meftah, H. Ben Rhaiem, A. Ben Haj Amara   +3 more
doaj   +1 more source

Mineralogy and chemistry of altered Icelandic basalts: Application to clay mineral detection and understanding aqueous environments on Mars [PDF]

, 2012
We used a suite of techniques, including those emulating compositional data sets obtained from Mars orbit and obtainable at the Mars surface, to examine aqueous alteration of basaltic rocks from Iceland as a mineralogic and geochemical analog for ...
Bish, D. L., Ehlmann, B. L., Mustard, J. F., Ruff, S. W.   +3 more
core   +2 more sources

Cation ordering over short range and long range scales in the MgAl2O4-CuAl2O4 series [PDF]

, 2012
A multi-analytical approach using electron microprobe analysis, X‑ray structural refinement, and optical absorption spectroscopy was applied to characterize short-range and long-range structures of synthetic spinel single crystals along the MgAl2O4 ...
Bosi, F., Fregola, ROSA ANNA, Hålenius, U., Skogby, H.   +3 more
core   +1 more source

Occurrence and mineralogy of the margarite- and muscovite-bearing pseudomorphs after topaz in the Juurakko pegmatite, Orivesi, southern Finland [PDF]

Bulletin of the Geological Society of Finland, 1988
Margarite- and muscovite-bearing pseudomorphs after topaz are described from the Juurakko pegmatite dyke, Orivesi, southern Finland. A supercritical vapour phase rich in calcium and alkalies caused alteration of topaz and some other silicates during ...
S.I. Lahti
doaj   +1 more source

Intercalation and Exfoliation Mechanism of Kaolinite During the Emulsion Polymerization

Chemical Engineering Transactions, 2017
Layered clays have been used as reinforcement in polymer nanocomposites by having a structure of silicate layers, cation exchange capacity, organically modified and have high aspect ratios.
J. Macedo Neto, S.P.R. Kimura, M.G.A. Vieira, J.E. Neto, N.R. Nascimento, L.M.F. Lona   +5 more
doaj   +1 more source

Mineralogical characteristics of metamorphic massif units outcropping in Göksun, Afşin and Ekinözü (Kahramanmaraş) region

Bulletin of the Mineral Research and Exploration, 2020
This study aims to investigate and correlate the mineralogical-petrographic characteristics of Metamorphites in Göksun, Afşin and Ekinözü in the Southeast Anatolian Metamorphic Massifs.
Deniz Hozatlıoğlu, Ömer Bozkaya, Hüseyin Yalçın, Hüseyin Yılmaz   +3 more
doaj   +1 more source